PHL - IDA

$200 Find Cheap Flights from Philadelphia to Idaho Falls

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Philadelphia to Idaho Falls departing on 2/1. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to Idaho Falls

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Philadelphia to Idaho Falls, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Philadelphia to Idaho Falls, as well as popular online travel agencies
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Flight Deals

Cheap Flights from Philadelphia to Idaho Falls (PHL-IDA)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Philadelphia to Idaho Falls that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Philadelphia to Idaho Falls

Thu, Sep 4 - Fri, Sep 19
 Logo
10:21 am - 4:05 pmPHL-IDA
31h 44m2 stops
 Logo
10:55 pm - 8:51 pmIDA-PHL
19h 56m1 stop
Fri, Sep 5 - Fri, Sep 19
 Logo
6:45 am - 4:05 pmPHL-IDA
11h 20m2 stops
 Logo
10:55 pm - 8:51 pmIDA-PHL
19h 56m1 stop
Thu, Oct 30 - Sat, Nov 1
Alaska Airlines Logo
7:02 am - 3:13 pmPHL-IDA
10h 11m1 stop
Alaska Airlines Logo
3:50 pm - 6:40 amIDA-PHL
12h 50m1 stop
$369Alaska Airlines
Find Deal
Thu, Oct 30 - Sat, Nov 1
American Airlines Logo
11:45 am - 9:49 pmPHL-IDA
12h 04m2 stops
American Airlines Logo
12:55 pm - 10:25 pmIDA-PHL
7h 30m1 stop
$404American Airlines
Find Deal
Wed, Sep 3 - Thu, Sep 18
Delta Logo
7:00 am - 2:19 pmPHL-IDA
9h 19m1 stop
Delta Logo
6:51 pm - 5:45 amIDA-PHL
8h 54m1 stop
$415Delta
Find Deal
Wed, Sep 3 - Thu, Sep 18
Delta Logo
6:00 am - 2:19 pmPHL-IDA
10h 19m2 stops
Delta Logo
6:51 pm - 5:45 amIDA-PHL
8h 54m1 stop
$420Delta
Find Deal
Wed, Sep 3 - Wed, Sep 17
American Airlines Logo
3:35 pm - 9:25 pmPHL-IDA
7h 50m1 stop
American Airlines Logo
1:35 pm - 1:10 amIDA-PHL
9h 35m1 stop
$456American Airlines
Find Deal
Tue, Sep 2 - Sat, Sep 6
United Airlines Logo
9:55 am - 3:11 pmPHL-IDA
7h 16m1 stop
United Airlines Logo
5:00 am - 3:59 pmIDA-PHL
8h 59m1 stop
$486United Airlines
Find Deal
Wed, Sep 10 - Sat, Sep 13
United Airlines Logo
8:00 am - 3:29 pmPHL-IDA
9h 29m1 stop
United Airlines Logo
5:00 am - 3:59 pmIDA-PHL
8h 59m1 stop
$489United Airlines
Find Deal
Thu, Oct 30 - Sat, Nov 1
Alaska Airlines Logo
12:48 pm - 11:59 pmPHL-IDA
13h 11m2 stops
Alaska Airlines Logo
6:05 am - 5:07 amIDA-PHL
21h 02m2 stops
$499Alaska Airlines
Find Deal
Booking Insights

KAYAK's insights & trends for Philadelphia to Idaho Falls flights

Get data-powered insights and trends into flights from Philadelphia to Idaho Falls to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Philadelphia to Idaho Falls?

The average price of all round-trip flights from Philadelphia to Idaho Falls clicked on KAYAK for each day over the last 12 months.

If your flying dates are flexible, you should consider flying to Idaho Falls on a Thursday, as we generally find the cheapest rates on that day for this route. On the other hand, Monday is the most expensive day to fly from Philadelphia to Idaho Falls. For your return ticket, we recommend flying on a Friday and avoiding Saturdays for the best deals.

What is the cheapest month to fly from Philadelphia to Idaho Falls?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Philadelphia to Idaho Falls, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Philadelphia to Idaho Falls is February, where tickets cost $496 (return) on average. On the other hand, the most expensive months are May and April, where the average cost of round-trip tickets is $992 and $832 respectively.

Good to know

Low seasonMarch
Cheapest flight$200
Best time to beat the crowds but there is an average 11% increase in price.
Most popular time to fly and prices are also 14% lower on average.
Flight from Philadelphia to Idaho Falls

When to book flights from Philadelphia to Idaho Falls

Are your dates flexible? Find out the best times to travel from Philadelphia to Idaho Falls based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Philadelphia to Idaho Falls

  • What is the cheapest flight from Philadelphia to Idaho Falls?

    In the last 3 days, the lowest price for a flight from Philadelphia to Idaho Falls was $200 for a one-way ticket and $325 for a round-trip.

  • Do I need a passport to fly between Philadelphia and Idaho Falls?

    A passport is not required to fly from Philadelphia to Idaho Falls.

  • Which aircraft models fly most regularly from Philadelphia to Idaho Falls?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Philadelphia to Idaho Falls?

    oneworld, Star Alliance, and SkyTeam are the airline alliances operating flights between Philadelphia and Idaho Falls, with oneworld being the most commonly used for this route.

  • Which is the best airline for flights from Philadelphia to Idaho Falls, Delta or United Airlines?

    The two airlines most popular with KAYAK users for flights from Philadelphia to Idaho Falls are Delta and United Airlines. With an average price for the route of $532 and an overall rating of 8.0, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $704 and an overall rating of 7.4.

  • How does KAYAK find such low prices on flights from Philadelphia to Idaho Falls?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Philadelphia to Idaho Falls.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Philadelphia to Idaho Falls?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Idaho Falls from Philadelphia is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Philadelphia to Idaho Falls?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Idaho Falls with an airline and back to Philadelphia with another airline. Booking your flights between Philadelphia and IDA can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Philadelphia to Idaho Falls?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Idaho Falls from Philadelphia up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 3 airlines serving from Philadelphia to Idaho Falls

 
See real verified KAYAK customer reviews for airlines flying from Philadelphia to Idaho Falls. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Philadelphia to Idaho Falls? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
DeltaOverall score based on 7981 reviews
7.9Comfort
7.9Entertainment
7.3Food
8.5Crew
8.2Boarding
Airline reviews

Delayed due to thunderstorms and no in-flight service due to rough weather — both of which are out of Delta’s control. Flight was good overall.

10.0 ExcellentLee, Aug 2025ATL - PHL
Read more Delta reviews

Delayed due to thunderstorms and no in-flight service due to rough weather — both of which are out of Delta’s control. Flight was good overall.

The flight attendants in SLC were rude. I arrived 40 minutes early to gate. Ticket said I needed check in for seat assignments and tried check in and attendants said they weren’t doing it. And proceeded to never call me to give me a ticket so when time to board I received the very last seat. Please relay to employees to do their job better..,

On this flight I felt the food offering was not as complete as on previous flights. The tomato salad was a bit off and there was nothing additional such a bread or butter. The breakfast was only one option, so you either ate what they had or ate nothing. The crew was efficient, but most seemed frustrated throughout the flight. The flight arrived early and was obstacle-free, so I’m overall quite happy, but the shine in the rest of the experience just wasn’t there.

The seats got pretty uncomfortable pretty fast. The armrests are bigger than on other planes, so I had less room in the actual seat. My butt hurt by the end of the flight. :/ comfort was the primary issue. The crew were fantastic!

I believe that a four-hour trip should have a meal. Delta had none.

Great flight with Delta! Boarding was quick and easy, the amenities were solid, and the plane was in great shape. The flight attendants had a fun, lively energy while staying professional. All in all, a smooth trip — even managed to catch up on some rest. Thanks, Delta!

I was uncomfortably cold on the plane. Other than that it was uneventful and therefore as enjoyable as a plane ride can be.

There was supposed to be a meal served, but there wasn’t and the major toilet was out of order

They made us board and then deboard due to mechanical issue which delayed the departure by almost 2 hours and we barely made our connecting flight. These quality checks should've been done before boarding not after.

Having to up charge for a seat assignment is not good. Delta can do better

It is clear that someone knew, and competent, is in charge of food at United Airlines at least for the international flights. I was flying in coach, but the choices of the dinner were excellent. Tasty, and appropriate size. I had the beef, which was a little bit like a shepherds pie, and it was good. Nothing comparable has been served on a United flight in years. It will not be confused with three star food, but it is very good for airline food. Even better was the breakfast choice between a cinnamon roll and a breakfast sandwich. I chose the breakfast sandwich which was absolutely delicious and which I would happily order again at my local Starbucks or Panera. It is clear that someone knew indifferent is in charge of the food and it’s about time.

The flight was comfortable with the exit row and great service

Had to cancel first flight because Airporter Bus took over 3 hrs to get to airport which resulted in an extra $378 dollar fare . Is there anyway I can be reimbursed for initial fare since it was not my fault? Sent from my iPhone EJ Ledet

Plane was crowded and even when we hit altitude, the plane was hot, not enough air flow.

Flight attendant in first class gave poor service (like he didn't want to be there) and food was awful. We sat waiting for gate upon arrival over 45 mins.

Stuck on tarmac for two hours plus a 5.5 hour flight. Rude flight attendant. And no meals, not even for purchase!

Excellent flight. Boarding was efficient and departure was on time. Smooth flight with on time arrival. Deplaning was also efficient.

This flight was perfect. No complaints and only the highest regard for the crew and ground staff and how they executed perfectly. I fly a lot with United and would request predictability and transparency in their operations instead of last minute changes.

This is for UA2274 from Houston to Sacramento. The flight was delayed arriving due to mechanical issues so we left about 3 hours later than scheduled. When boarding the plane the temperature inside was excessive - likely close to 100. Pilot apologized and said it was going to improve at altitude, which it did. But before that I honestly thought there might have been more delays removing passengers made ill from the heat. We were delayed leaving due to another mechanical issue. There was not water on the plane due to a panel that was not secured. They did that quickly, but the combination of mechanical issues was rather disturbing and did not reflect well on United.

1. when we went to check in, our 2 first class seats had been CANCELED and the flight was sold out. This was done without our prior knowledge. It was all we could do to restore one first class seat for my wife and I flew economy. 2, Our flight home was scheduled to leave at 10:30 pm. Due to tsunami warnings, the roads were closed and our flight status was uncertain as to whether it would leave as scheduled. It was announced that it would now leave at 11:20 pm and the roads were now open since the tsunami had come and gone. We made a mad dash to the airport and checked in. Delays were announced at 12:30 pm, 1:30 am, 2:30 am and at 3:30 am it was canceled. Since this was a flight due to natural (tsunami) causes, there was no compensation. We were told to return at 1:00 pm the next day and our baggage would be kept on the plane since the same plane was going to leave at 1:00 pm. We had to return to our hotel for the rest of the night. The same plane did not leave at 1:00 pm and our baggage was gone! All in all, it was a miserable performance by UA. Information was hard to obtain and no one knew what was going on and what was going to happen. Hundreds of passengers slept on the floor, chairs, etc. No food and no water was made available to the passengers. It was a situation where UA could care less what was going on. As a one million mile flyer, I had not experienced anything like this before and it was hugely disappointing!

Plane was delayed for 6 hours, at first by weather, which is understandable, but was further delayed with NO given reason for 2 1/2 hours more. We had no clue when we were going to depart actually until they opened the ramp. VERY POOR to ZERO COMMUNICATION!!!

Flight was delayed and after being in the airport for like seven hours, it was canceled.

Flight delays numerous times. Everytime we would get close to boarding it would be delayed again. Strung along the entire time.

Overall very good, only complaint I have is the crew from CLT to SAT could have collected trash sooner.

Above and beyond effort from this crew in a tough situation. So helpful and understanding. Thank you!

We started with trouble checking in 24 hours early. Then my husband did not get his TSA precheck. Finally flight delayed due to no crew. I know things happen

Most miserable flight ever. We waited almost 2 hours on the runway because the flight was oversold. American offered $1200 credit. Then there was some nonsense about weight distribution. Ridiculous. No food for 8 plus hours on the flight. I will be writing a letter.

Honestly, I haven’t flown American in years, probably due to the pandemic and my being unable to travel for certain periods in the last two years, but it was a good experience to dig out or obtain a new American Airlines account after many years of traveling for business with American in the past.

It’s a great flight. Service is good. Staff is awesome.

Everything about the flight was lovely…We left early, arrived early, cabin crew were efficient and helpful. Flight was easy and most pleasant.

Everything you need to know for your flight from Philadelphia to Idaho Falls

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